LM385AZ-1.2

Overview

The LM385AZ-1.2 is a two-terminal voltage reference manufactured by National Semiconductor, now part of Texas Instruments. It provides a nominal output voltage of 1.235 V with a tolerance range between 1.231 V and 1.239 V. The device utilizes bipolar technology and operates within a temperature range of 0 °C to 70 °C. It is housed in a plastic TO-92 package with three pins. The maximum supply current is specified at 0.008 mA.

Feature Summary

• Provides stable reference voltage via two-terminal operation
• Designed for low power consumption applications
• Utilizes bipolar technology for consistent performance

Applications

• Portable instrumentation circuits
• Battery-powered measurement devices
• General-purpose analog circuit references

Procurement Notes

Verify the manufacturer designation as National Semiconductor or Texas Instruments, as the company was acquired. Confirm the specific suffix 'AZ' matches the required tolerance and packaging specifications. Ensure the component is compatible with the intended operating temperature range of 0 to 70 degrees Celsius. Check for lead-free compliance status if required by project regulations.

Selection Notes

Select this component when a precise 1.235 V reference is needed for low-current applications. The TO-92 package suits through-hole designs requiring robust mechanical mounting. Consider the maximum supply current limit when designing biasing networks. Verify that the initial accuracy meets the system requirements for the specific application environment.

Part Context

This component belongs to the LM385 family of micro-power shunt voltage references. These devices are widely used in precision analog circuits where stability and low power are critical. The family includes various voltage options and packages to suit different design constraints.

Replacement Considerations

LM385Z-1.2G from onsemi offers similar specifications including TO-92 packaging and comparable voltage accuracy. Other variants within the LM385 series may provide alternative pinouts or improved temperature coefficients depending on specific design needs.